The chairman of global banking giant Credit Suisse, Antonio Horta-Osorio, has resigned with immediate effect after breaking COVID quarantine rules, Report informs, citing the BBC.

Horta-Osorio, who was with the bank for just nine months, left following an internal investigation.

The former boss of Lloyds Banking Group joined Credit Suisse after a series of scandals at the Swiss bank.

But it has emerged he breached COVID rules last year, including by attending the Wimbledon tennis finals.

“I regret that a number of my personal actions have led to difficulties for the bank and compromised my ability to represent the bank internally and externally,” Horta-Osorio said in a statement issued by the bank.

“I therefore believe that my resignation is in the interest of the bank and its stakeholders at this crucial time,” he added.

Antonio Horta-Osorio has been replaced by board member Axel Lehmann.

Last month, a preliminary investigation by Credit Suisse had found that Mr Horta-Osorio had breached Covid-19 rules.

He attended the Wimbledon tennis finals in July at a time when the UK’s COVID restrictions required him to be in quarantine.